..We demonstrate that Fcp1 activity is not involved in the formation of the initiation-active form of Pol I (the Pol I-Rrn3p complex) and propose that dephosphorylation of Pol I by Fcp1p facilitates chain elongation during rRNA synthesis...

A Noc complex specifically involved in the formation and nuclear export of ribosomal 40 S subunits

..In contrast, the presence of other r-proteins is mainly required before nuclear export is initiated. Our studies draw a correlation between the in vitro assembly, structural localization, and in vivo function of r-proteins...